POF thermal shrinkage film blowing device

Abstract

The invention relates to the field of thermal shrinkage film processing, in particular to a POF thermal shrinkage film blowing device which comprises a supporting clamping seat, a feeding guide groove is formed in the rear portion of the upper end face of the supporting clamping seat, and a protective baffle is fixedly arranged at the position, right opposite to the feeding guide groove, of the upper end face of the supporting clamping seat. By arranging the screening device, when plastic particles of a heat shrinkage film are screened and fed, a servo motor can synchronously and reversely drive a first screening rotary disc and a second screening rotary disc to synchronously and reversely rotate through mutual meshing of a first bevel gear, a fourth bevel gear and a fifth bevel gear; and therefore, the second screening rotary disc and the first screening rotary disc can screen and feed plastic particles to the maximum extent, the efficiency of screening and feeding the plastic particles by the equipment is effectively improved, and meanwhile, the stability of subsequent processing of the thermal shrinkage film is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of POF film processing equipment, and particularly to a POF heat shrinkable blown film device. Background Art

[0002] POF heat shrinkable film is mainly made of linear low density polyethylene (LLDPE) and copolymerized polypropylene (PP) through a multi-layer co-extrusion process, usually with a three-layer or five-layer structure. Among them, LLDPE accounts for about 70%, and PP as the inner and outer layers accounts for about 30%, endowing it with high toughness, tear resistance and heat sealing performance. Plastic particles are essential raw materials for making shrink films, which can conveniently provide sufficient raw materials for the blown film equipment for subsequent processing and improve the efficiency of shrink film processing.

[0003] For example, as disclosed in the publication number: CN215791027U, a blown film machine for producing POF heat shrinkable film includes a machine body. A bridging plate is fixedly installed on the upper part of the machine body. The machine body is fixedly connected with a backing plate through the bridging plate. A connecting block is fixedly connected with an upper sieve plate through a connecting plate. A movable rod is fixedly installed on the upper part of the other end of the lower sieve plate. Connecting rods are fixedly installed at both ends of the movable rod. In this blown film machine for producing POF heat shrinkable film, a connecting block is installed on the side of the lower sieve plate, and the connecting block is connected with the upper sieve plate through a connecting plate, which can make the lower sieve plate drive the upper sieve plate to vibrate through the connecting plate. Since there are plastic particles on the upper sieve plate, the plastic particles vibrate onto the lower sieve plate. Through the sieve holes opened at one end of the lower sieve plate, the plastic particles can enter the sliding opening and then enter the funnel through the sliding opening. Through the device of the spiral blade, the plastic particles are guided into the heating area, and finally the purpose of avoiding adhesion of plastic particles is achieved.

[0004] Although the above-mentioned equipment can perform screening operations on plastic particles, its stability in screening plastic particles is insufficient, and when the above-mentioned equipment feeds plastic particles, its utilization efficiency of power is also insufficient. Therefore, a POF heat shrinkable blown film device is needed to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide a POF heat shrinkable blown film device to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A POF heat shrinkable blown film device includes a support base. A feeding guide groove is opened at the rear part of the upper end surface of the support base, and a protective baffle is fixedly arranged on the upper end surface of the support base opposite to the feeding guide groove. A positioning base is arranged at the center of the front end surface of the support base.

[0007] Feeding device, the feeding device is fixedly arranged near the middle of the upper end surface of the support base, and the feeding device is used for feeding and screening plastic particles;

[0008] Guiding device, the guiding device is fixedly arranged on the upper end surface of the support base, and the guiding device is used for processing plastic particles.

[0009] Preferably, the feeding device includes a limit clamping seat, a servo motor is arranged at the center of the upper end surface of the limit clamping seat, and a screening device is arranged at the output end of the servo motor. A first bevel gear is rotatably clamped at the side part of the inner end surface of the limit clamping seat, and a transmission clamping shaft is arranged at the center of the side end surface of the first bevel gear. A second bevel gear is arranged at the side end surface of the transmission clamping shaft. A third bevel gear is rotatably clamped at the rear end surface of the limit clamping seat near the second bevel gear, and a limit rotating shaft is fixedly clamped at the inner end surface of the third bevel gear. A spiral guide plate is arranged at the bottom of the side end surface of the limit rotating shaft.

[0010] Preferably, the screening device includes a positioning rotating shaft, a fifth bevel gear is arranged at the top of the positioning rotating shaft, and a second screening turntable is fixedly arranged at the lower end surface of the positioning rotating shaft. A limit rotating sleeve is rotatably clamped at the outer end surface of the positioning rotating shaft, a fourth bevel gear is arranged at the upper part of the limit rotating sleeve, and a first screening turntable is arranged at the lower part of the limit rotating sleeve.

[0011] Preferably, the guiding device includes a collecting hopper, a feeding port is arranged at the rear end surface of the collecting hopper, and a feeding port is opened at the center of the front end surface of the blanking slide plate. A guiding cylinder is fixedly arranged at the center of the lower end surface of the collecting hopper, and a heating module is fixedly arranged at the center of the lower end surface of the guiding cylinder.

[0012] Preferably, the upper end surface of the first bevel gear is meshed and connected with the fifth bevel gear, and the lower end surface of the first bevel gear is meshed and connected with the fourth bevel gear. During transmission, the first bevel gear can synchronously drive the fourth bevel gear and the fifth bevel gear to rotate synchronously in the opposite direction, thereby facilitating subsequent providing sufficient power for the first screening turntable and the second screening turntable to perform synchronous double reverse screening on plastic particles, and thus improving the efficiency of subsequent screening and feeding of plastic particles.

[0013] Preferably, the top of the first screening turntable is attached to the bottom of the second screening turntable, and both the first screening turntable and the second screening turntable are rotatably clamped to the bottom of the limit clamping seat. When the top of the first screening turntable rotates, it can be attached to the bottom of the second screening turntable, which can prevent the plastic particles about to be fed at the bottom from splashing during screening, and improves the stability of feeding.

[0014] Preferably, the second bevel gear is meshed with the third bevel gear, which can effectively improve the transmission stability of subsequent equipment and also improve the power utilization efficiency of the equipment.

[0015] Preferably, the side wall of the spiral feeding plate is attached to the inner wall of the feeding cylinder, which can effectively improve the stability of the subsequent spiral feeding plate for guiding the plastic particles in the hopper upward.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By setting the screening device, when screening and feeding the plastic particles of the heat shrinkable film, the servo motor can drive the first screening turntable and the second screening turntable to rotate synchronously and reversely through the meshing of the first bevel gear, the fourth bevel gear and the fifth bevel gear, so that the second screening turntable and the first screening turntable can screen and feed the plastic particles to the greatest extent, effectively improving the screening and feeding efficiency of the equipment for the plastic particles, and also improving the stability of subsequent processing of the heat shrinkable film.

[0018] 2. By setting the feeding device, during transmission, the servo motor can provide synchronous reverse power for the fourth bevel gear and the fifth bevel gear through the first bevel gear, which is convenient for subsequent screening and feeding of plastic particles. At the same time, the first bevel gear can also provide power for the spiral feeding plate to synchronously guide the plastic particles through the transmission card shaft, the second bevel gear and the third bevel gear, effectively improving the matching compatibility of the equipment for feeding and guiding the plastic particles, and also improving the power utilization efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a schematic structural diagram of the main body of the present invention;

[0021] Figure 2 is a side view of the main body of the present invention;

[0022] Figure 3 is a schematic structural diagram of the feeding device of the present invention;

[0023] Figure 4 is a side view of the feeding device of the present invention;

[0024] Figure 5 This is the exploded view of the screening device of the present invention;

[0025] Figure 6 This is the schematic structural view of the material guiding device of the present invention;

[0026] Figure 7 This is the side view of the material guiding device of the present invention.

[0027] In the figure: 1 - feeding guide groove, 2 - feeding device, 3 - material guiding device, 4 - support clamping seat, 5 - protective baffle, 6 - positioning clamping seat, 21 - servo motor, 22 - screening device, 23 - first bevel gear, 24 - transmission clamping shaft, 25 - second bevel gear, 26 - third bevel gear, 27 - limit rotating shaft, 28 - spiral material guiding plate, 29 - limit clamping seat, 221 - first screening turntable, 222 - limit rotating sleeve, 223 - fourth bevel gear, 224 - positioning rotating shaft, 225 - fifth bevel gear, 226 - second screening turntable, 31 - aggregate hopper, 32 - feeding port, 33 - blanking slide plate, 34 - heating module, 35 - material guiding cylinder. Detailed implementation manners

[0028] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so as to describe the embodiments of this application here. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products or devices.

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] Embodiment 1

[0032] Please refer to Figure 1-7, an embodiment provided by the present invention: a POF heat shrinkable blown film device, including a support base 4, a feed guide groove 1 is provided at the rear part of the upper end surface of the support base 4, and a protective baffle 5 is fixedly arranged at the upper end surface of the support base 4 opposite to the feed guide groove 1, and a positioning base 6 is arranged at the center of the front end surface of the support base 4,

[0033] A feeding device 2, the feeding device 2 is fixedly arranged at the upper end surface of the support base 4 near the middle part, and the feeding device 2 is used for feeding and screening plastic particles;

[0034] A material guiding device 3, the material guiding device 3 is fixedly arranged at the upper end surface of the support base 4, and the material guiding device 3 is used for processing plastic particles.

[0035] As Figure 3 And Figure 4 , the feeding device 2 includes a limit base 29, a servo motor 21 is arranged at the center of the upper end surface of the limit base 29, and a screening device 22 is arranged at the output end of the servo motor 21. A first bevel gear 23 is rotatably clamped at the side part of the inner end surface of the limit base 29, and a transmission card shaft 24 is arranged at the center of the side end surface of the first bevel gear 23. A second bevel gear 25 is arranged at the side end surface of the transmission card shaft 24. A third bevel gear 26 is rotatably clamped at the rear end surface of the limit base 29 near the second bevel gear 25, and a limit rotating shaft 27 is fixedly clamped at the inner end surface of the third bevel gear 26. A spiral guide plate 28 is arranged at the bottom of the side end surface of the limit rotating shaft 27.

[0036] As Figure 5 , the screening device 22 includes a positioning rotating shaft 224, a fifth bevel gear 225 is arranged at the top of the positioning rotating shaft 224, and a second screening turntable 226 is fixedly arranged at the lower end surface of the positioning rotating shaft 224. A limit rotating sleeve 222 is rotatably clamped at the outer end surface of the positioning rotating shaft 224, and a fourth bevel gear 223 is arranged at the upper part of the limit rotating sleeve 222, and a first screening turntable 221 is arranged at the lower part of the limit rotating sleeve 222.

[0037] As Figure 6 And Figure 7 , the material guiding device 3 includes a collecting hopper 31, a feed inlet 32 is arranged at the rear end surface of the collecting hopper 31, and a feed inlet 32 is opened at the center of the front end surface of the blanking slide plate 33. A guide cylinder 35 is fixedly arranged at the center of the lower end surface of the collecting hopper 31, and a heating module 34 is fixedly arranged at the center of the lower end surface of the guide cylinder 35.

[0038] As Figure 5, the upper end face of the first bevel gear 23 is meshed and connected with the fifth bevel gear 225, and the lower end face of the first bevel gear 23 is meshed and connected with the fourth bevel gear 223. During transmission, the first bevel gear 23 can synchronously drive the fourth bevel gear 223 and the fifth bevel gear 225 to rotate synchronously in opposite directions, thereby facilitating subsequent providing sufficient power for the first screening turntable 221 and the second screening turntable 226 to perform synchronous double reverse screening on plastic particles, thus improving the efficiency of subsequent screening and feeding of plastic particles.

[0039] As Figure 3 , the top of the first screening turntable 221 is in contact with the bottom of the second screening turntable 226, and both the first screening turntable 221 and the second screening turntable 226 are rotationally clamped to the bottom of the limit clamping seat 29. When the top of the first screening turntable 221 rotates, it can be in contact with the bottom of the second screening turntable 226, which can prevent the plastic particles about to be fed at the bottom from splashing during screening and improve the stability of feeding.

[0040] As Figure 4 , the second bevel gear 25 is meshed and connected with the third bevel gear 26, which can effectively improve the stability of subsequent equipment transmission and also improve the utilization efficiency of equipment for power.

[0041] As Figure 4 and Figure 6 , the side wall of the spiral guide plate 28 is in close connection with the inner wall of the guide cylinder 35, which can effectively improve the stability of subsequent spiral guide plate 28 for guiding the feeding of plastic particles inside the hopper 31.

[0042] Working principle: Before use, the staff can position the external feeding module at the rear of the support seat 4, which is convenient for continuously providing plastic particles for blowing film inside the second screening turntable 226 in the subsequent process. When processing the plastic particles, the staff can start the servo motor 21. At this time, the servo motor 21 can drive the positioning rotating shaft 224 at the bottom to rotate. The positioning rotating shaft 224 can synchronously drive the fifth bevel gear 225 and the second screening turntable 226 to rotate. At the same time, when the fifth bevel gear 225 rotates, it can drive the fourth bevel gear 223 at the bottom to rotate synchronously in the opposite direction through the first bevel gear 23, so that the first screening turntable 221 and the second screening turntable 226 can rotate synchronously in the opposite direction, thereby performing double high-speed screening on the internal plastic particles, and then improving the stability and efficiency of screening and feeding the plastic particles. The screened plastic particles can fall into the blanking slide plate 33, and then the blanking slide plate 33 can be introduced into the aggregate hopper 31 through the feeding port 32. At this time, the aggregate hopper 31 can introduce the screened plastic particles into the inlet of the guide cylinder 35 by gravity. At the same time, when the above-mentioned first bevel gear 23 is transmitting power, it can drive the second bevel gear 25 to rotate synchronously through the transmission card shaft 24, so that the second bevel gear 25 can drive the limit rotating shaft 27 and the spiral guide plate 28 at the bottom to rotate through the third bevel gear 26. Subsequently, the spiral guide plate 28 can perform synchronous spiral guiding on the plastic particles inside the aggregate hopper 31, which is convenient for the subsequent heating module 34 to perform rapid heating operation on the plastic particles.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A POF heat shrinkable film blowing device, comprising a support card seat (4), a feed guide groove (1) is provided at the rear part of the upper end surface of the support card seat (4), and a protective baffle (5) is fixedly provided at the upper end surface of the support card seat (4) directly opposite to the feed guide groove (1), and a positioning card seat (6) is provided at the center of the front end surface of the support card seat (4), characterized in that: A feeding device (2), the feeding device (2) being fixedly arranged on the upper end surface of the supporting base (4) near the middle, and the feeding device (2) being used for feeding and screening plastic particles; A material guiding device (3), wherein the material guiding device (3) is fixedly arranged on the upper end surface of the supporting base (4), and the material guiding device (3) is used for processing plastic particles.

2. A POF heat shrinkable film blowing device according to claim 1, characterized in that: The feeding device (2) comprises a limit clamping seat (29), a servo motor (21) is arranged at the center of the upper end surface of the limit clamping seat (29), and a screening device (22) is arranged at the output end of the servo motor (21), a first bevel gear (23) is rotatably clamped at the side of the inner end surface of the limit clamping seat (29), a transmission clamping shaft (24) is arranged at the center of the side end surface of the first bevel gear (23), a second bevel gear (25) is arranged at the side end surface of the transmission clamping shaft (24), a third bevel gear (26) is rotatably clamped at the rear end surface of the limit clamping seat (29) near the second bevel gear (25), and a limit rotating shaft (27) is fixedly clamped at the inner end surface of the third bevel gear (26), and a spiral guide plate (28) is arranged at the bottom of the side end surface of the limit rotating shaft (27).

3. A POF heat shrinkable film blowing device according to claim 2, characterized in that: The screening device (22) comprises a positioning rotating shaft (224), a fifth bevel gear (225) is arranged on the top of the positioning rotating shaft (224), and a second screening turntable (226) is fixedly arranged on the lower end surface of the positioning rotating shaft (224), the outer end surface of the positioning rotating shaft (224) is rotatably engaged with a limiting rotating sleeve (222), a fourth bevel gear (223) is arranged on the upper part of the limiting rotating sleeve (222), and a first screening turntable (221) is arranged on the lower part of the limiting rotating sleeve (222).

4. A POF heat shrinkable film blowing device according to claim 3, characterized in that: The material guiding device (3) comprises a collecting hopper (31), a rear end face of the collecting hopper (31) is provided with a feeding port (32), and a feeding port (32) is opened at the center of the front end face of the unloading slide plate (33), a material guiding cylinder (35) is fixedly provided at the center of the lower end face of the collecting hopper (31), and a heating module (34) is fixedly provided at the center of the lower end face of the material guiding cylinder (35).

5. A POF heat shrinkable film blowing device according to claim 4, characterized in that: The upper end surface of the first bevel gear (23) is meshedly connected to the fifth bevel gear (225), and the lower end surface of the first bevel gear (23) is meshedly connected to the fourth bevel gear (223).

6. A POF heat shrinkable film blowing device according to claim 4, characterized in that: The top of the first screening turntable (221) fits with the bottom of the second screening turntable (226), and both the first screening turntable (221) and the second screening turntable (226) are rotatably engaged with the bottom of the limiting clamping seat (29).

7. A POF heat shrinkable film blowing device according to claim 4, characterized in that: The second bevel gear (25) is meshingly connected with the third bevel gear (26).

8. A POF heat shrinkable film blowing device according to claim 4, characterized in that: The side wall of the spiral material guide plate (28) is fitted and connected to the inner wall of the material guide cylinder (35).

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